content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
   * Other names may be trademarks of their respective owners.]
   *
   * ----------------------------
   * DefaultNumberAxisEditor.java
   * ----------------------------
   * (C) Copyright 2005-2009, Object Refinery Limited and Contributors.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   Arnaud Lelievre;
   *
   * Changes:
   * --------
   * 24-Nov-2005 : Version 1, based on NumberAxisPropertyEditor (DG);
   * 18-Dec-2008 : Use ResourceBundleWrapper - see patch 1607918 by
   *               Jess Thrysoee (DG);
   * 27-Feb-2009 : Fixed bug 2612649, NullPointerException (DG);
   * 03-Nov-2011 : Refactoring to use new DefaultValueAxisEditor (MH);
   */
  
  package org.jfree.chart.editor;
  
  import java.awt.event.ActionEvent;
  import java.awt.event.FocusEvent;
  import java.awt.event.FocusListener;
  
  import javax.swing.BorderFactory;
  import javax.swing.JCheckBox;
  import javax.swing.JLabel;
  import javax.swing.JPanel;
  import javax.swing.JTextField;
  
  import org.jfree.chart.axis.Axis;
  import org.jfree.chart.axis.NumberAxis;
  import org.jfree.chart.axis.NumberTickUnit;
  import org.jfree.chart.ui.LCBLayout;
  
  /**
   * A panel for editing the properties of a value axis.
   */
  class DefaultNumberAxisEditor extends DefaultValueAxisEditor
      implements FocusListener {
  
      private double manualTickUnitValue;
  
      private JTextField manualTickUnit;
  
  
      /**
       * Standard constructor: builds a property panel for the specified axis.
       *
       * @param axis  the axis, which should be changed.
       */
      public DefaultNumberAxisEditor(NumberAxis axis) {
  
          super(axis);
  
          this.manualTickUnitValue = axis.getTickUnit().getSize();
          validateTickUnit();
      }
  
      @Override
      protected JPanel createTickUnitPanel() {
          JPanel tickUnitPanel = new JPanel(new LCBLayout(3));
          tickUnitPanel.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
  
          tickUnitPanel.add(new JPanel());
          JCheckBox autoTickUnitSelectionCheckBox = new JCheckBox(
                  localizationResources.getString("Auto-TickUnit_Selection"),
                  isAutoTickUnitSelection());
          autoTickUnitSelectionCheckBox.setActionCommand("AutoTickOnOff");
          autoTickUnitSelectionCheckBox.addActionListener(this);
          setAutoTickUnitSelectionCheckBox(autoTickUnitSelectionCheckBox);
          tickUnitPanel.add(getAutoTickUnitSelectionCheckBox());
          tickUnitPanel.add(new JPanel());
  
          tickUnitPanel.add(new JLabel(localizationResources.getString(
                  "Manual_TickUnit_value")));
          this.manualTickUnit = new JTextField(Double.toString(
                  this.manualTickUnitValue));
          this.manualTickUnit.setEnabled(!isAutoTickUnitSelection());
          this.manualTickUnit.setActionCommand("TickUnitValue");
          this.manualTickUnit.addActionListener(this);
          this.manualTickUnit.addFocusListener(this);
          tickUnitPanel.add(this.manualTickUnit);
          tickUnitPanel.add(new JPanel());
  
          return tickUnitPanel;
      }
  
      /**
       * Handles actions from within the property panel.
       * @param event an event.
       */
      @Override
      public void actionPerformed(ActionEvent event) {
          String command = event.getActionCommand();
          if (command.equals("TickUnitValue")) {
              validateTickUnit();
          }
          else {
              // pass to the super-class for handling
              super.actionPerformed(event);
          }
      }
  
      @Override
      public void focusLost(FocusEvent event) {
          super.focusLost(event);
          if (event.getSource() == this.manualTickUnit) {
              validateTickUnit();
          }
      }
  
      @Override
      public void toggleAutoTick() {
          super.toggleAutoTick();
          if (isAutoTickUnitSelection()) {
              this.manualTickUnit.setText(Double.toString(this.manualTickUnitValue));
              this.manualTickUnit.setEnabled(false);
          }
          else {
              this.manualTickUnit.setEnabled(true);
          }
      }
  
      public void validateTickUnit() {
          double newTickUnit;
          try {
              newTickUnit = Double.parseDouble(this.manualTickUnit.getText());
          }
          catch (NumberFormatException e) {
              newTickUnit = this.manualTickUnitValue;
          }
  
          if (newTickUnit > 0.0) {
              this.manualTickUnitValue = newTickUnit;
          }
          this.manualTickUnit.setText(Double.toString(this.manualTickUnitValue));
      }
  
      /**
       * Sets the properties of the specified axis to match the properties
       * defined on this panel.
       *
       * @param axis  the axis.
       */
      @Override
      public void setAxisProperties(Axis axis) {
          super.setAxisProperties(axis);
          NumberAxis numberAxis = (NumberAxis) axis;
          if (!isAutoTickUnitSelection()) {
              numberAxis.setTickUnit(new NumberTickUnit(manualTickUnitValue));
          }
      }
  }
  